baber/WOPTO huggingface dataset:
Patent GB-1033718-A (GB)
Title: Control valve for double acting lift cylinder
IPC: B66F9/22
Filed: 1964-06-15
Abstract: 1,033,718. Valves. HYDRAULIC UNIT SPECIALTIES CO. June 15, 1964, No. 24684/64. Heading F2V. An hydraulic control valve has a spool 16 shiftable from a neutral position blocking off the service passages 30, 31 from both supply and exhaust passages 28, 36 to first and second positions selectively connecting either service passage with the supply passage and the other service passage with the exhaust passage, to a third position in which the service passages communicate with each other, and to a fourth position in which the service passages both communicate with the supply passage, means 53 being provided to limit flow of return fluid from the service passage 30 to the exhaust passage 36 when the spool is in its first position. The valve is of the " open-centre " type having a central supply passage with upstream and downstream sections 24, 25. When the upstream section is isolated by lands 48, 49 or by the land 48 alone from the downstream sections fluid under pressure flows from the upstream section through a feeder passage into the supply passage 28 which may supply the service port 31 to cause a ram 9 to be lowered slowly, exhaust taking place through the restricted passage means 53 or to the service port 30 to cause slow raising of the ram, a groove 46 on the spool providing an exhaust connection between the service port 31 and the exhaust passage 32. In the third and fourth positions of the spool fast lowering and fast raising of the ram are achieved, respectively. A valve 38 opens when pressure in passage 32 exceeds that at port 31, thus preventing cavitation, while a valve 35, or alternatively a restricted opening leading to exhaust outlet 33, ensures that the pressure in the exhaust passage is maintained at an adequate value to operate the valve 38.
Patent GB-1223524-A (GB)
Title: Improvements in the manufacture of penicillins and salts thereof
IPC: C07D211/42
Filed: 1969-05-15
Abstract: 1,223,524. Penicillins; xanthogen acids. LAAKETEHDAS ORION OY. 15 May, 1969 [20 May, 1968], No. 24729/69. Headings C2A and C2C. Novel penicillins of the general formula in which R stands for an alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, aralkyl, alkoxyalkyl, aryloxyalkyl, alkylthioalkyl, aminoalkyl or a heterocyclic radical, R<SP>1</SP> stands for H or a methyl, phenyl or benzyl group and R<SP>2</SP> stands for H or a methyl group are prepared by reacting 6-APA or a salt thereof with a reactive derivative of an acid of formula and, if desired, converting the product to a salt with an inorganic or organic base. The acid reactants of Formula II are prepared by reacting a suitable potassium xanthogenate with a halogen carboxylic acid. The products may be purified by dissolving in sodium bicarbonate solution, extracting with ether and precipitating with acid.
Patent GB-1187000-A (GB)
Title: Method and Apparatus for Printing on an External Cylindrical Surface.
IPC: B41F17/22
Filed: 1968-05-23
Abstract: 1,187,000. Printing apparatus. COLUMBIAN CARBON CO. 23 May, 1968 [24 May, 1967] No. 24771/68. Heading B6C. The cylindrical surfaces of cans 19 are printed on, as they revolve in holders carried by continuously moving: transfer mechanisms 7, by offset blankets 8, spaced around they surface of offset cylinder If, the blankets 8 and the gaps 9 between them being so arranged that the blankets 8 are in contact with plate cylinders 4 only when no can 19 is being printed on. Each blanker 8 is longer than the circumference of a can 19, and each gap 9 is longer than the length of a blanket. The plate cylinders 4 have independent inking systems 5, and may each print a different colour. Preferably there are 1-5 cylinders 4. If a can 19 is missing from a holder on transfer mechanism 7, or if a defective can is present, a sensing device may cause the blanket 8 which would have printed that can to be withdrawn towards the centre of cylinder 1- by, e.g. cam action, into at non-printing position. The individual blankets 8 may be tightened by shafts 10.
Patent GB-167969-A (GB)
Title: Improvements relating to telephone or other call indicators
IPC: G08B5/28
Filed: 1920-08-27
Abstract: 167,969. Siemens Bros. & Co., Ltd., Petithory, E. A., and Collyer, J. E. Aug. 27, 1920. Falling-flap indicators.-A telephone call-indicator is characterized by the provision of spring clips 20 mounted, together with the jack springs 21, 22 and break spring 40, upon a bracket 23, Fig. 1, at the rear of the main frame 1. The energizing-coil 18 for the core 10 is of the slip-on type, and is fitted with terminals or connecting- lugs 19 which engage with the spring clips 20. A flexible lead 29, Fig. 2, joins the plug bush 3 to a terminal on the bracket 23, which is similarly connected by a lead 27 to a tag 26 on a plate 25 carrying an adjustable night-bell contact-screw 24. In this way, all internal connections are taken to the rear of the indicator, so that all external wires are soldered to the ends 31 of the spring set. When a subscriber rings up, the armature 6 is attracted to the core, and thereby frees a catch 17 on the indicating signal or shutter 11 from a hook 16 on the end of the trigger arm 15. This allows the weighted and pivoted shutter 11 to fall forward, its lower part 34 simultaneously forcing a light spring 32 against the end of the contact screw 24 to complete the night-bell circuit. When the operator plugs in, the plug engages with a projection 36 upon a spring 35, the upper end of which restores the shutter to its upper position.
Patent GB-1347395-A (GB)
Title: Electro-optic modulators
IPC: G02F1/03
Filed: 1971-04-19
Abstract: 1347395 Strontium niobate NIPPON ELECTRIC CO Ltd 19 April 1971 [20 March 1970] 24882/71 Heading C1A [Also in Divisions H3-H5] A single domain single crystal of a composition substantially given by (SrO) x (Nb 2 O 5 ), where 1À7 # Î # 2À4 and small amounts of additives may be incorporated, exhibits the transverse linear electro-optic (Pockel) effect. Such a crystal is ferroelectric and optically biaxial, belonging to the rhombic crystal system. It may be prepared by mixing the calculated weights of SrCO 3  and Nb 2 O 5  (or other materials which decompose into SrO and Nb 2 O 5  at the temperatures used) and sintering at e.g. 1250‹ C., to give polycrystals by solid state reaction. A single crystal is formed from the sintered material by the Czochralski method, or by using a floating zone technique with a ceramic rod formed from the sintered material.
Patent GB-883725-A (GB)
Title: Textile winding machines
Inventor: FISHER JEFFREY O'NEILL
IPC: D01H1/36
Filed: 1958-08-02
Abstract: 883,725. Builder motion for textile winding. BRITISH NYLON SPINNERS Ltd. July 30, 1959 [Aug. 2, 1958], No. 24974/58. Class 120(2) To provide a high yarn-throughput with a low lay ratio in winding double taper yarn packages, the traverse mechanism is operated with approximately simple harmonic motion by a rotary motor with a crank, and the traverse is reciprocated by reciprocating the rotary motor by servomechanism according to the contour of a cam. As applied to a downtwister for synthetic linear polymer, the ring rail 3 is traversed by a vertical rod which is reciprocated through links 7, 9 and a bell-crank 10 from a rod 7 reciprocated through a crank from a rotary hydraulic motor 6, the links 7, 8 and the arms of the bell-crank being of equal or proportionate lengths. The motor is movable on wheels 11 on a track 12 by a hydraulic ram controlled by a reversing-valve 13 operated by a rod 20. The latter is pivoted at the centre 22 of a link 16 linked at 15, 17 respectively to the motor and to a link 18 pivoted to a fixed point 21; at the centre of the link 17 is a knife-edge follower 19 pressed against a cam 14. With the motor stationary on its rails and the valve 13 in the neutral position shown, a short movement of the follower, e.g. from left to right moves the link 16 about its upper pivot in the same direction and opens the valve 13 to move the motor in the opposite direction, i.e. from right to left whereby the upper pivot of the link 16 moves towards its original position. The link 17 is twice the length of link 15 and the follower is at the centre of the link 17: consequently the point 22 now moves back to its original position restoring the valve to neutral. Moreover, the link 18 is equal in length to the distance between the point 22 and the point where the links 16, 17 are connected, so that the follower 19 will move almost in a straight line, on which line the cam is mounted. Specifications 543,466 and 871,429 are referred to.
Patent GB-687276-A (GB)
Title: Process for the preservation of edible substances
IPC: A23L3/3463
Filed: 1949-09-29
Abstract: The growth of micro-organisms in or on organic materials for human or animal consumption, exemplified by sugar beets, turnips, onions and potatoes, is reduced or prevented by the application, in concentrations of 1 : 10,000 to 1 : 50,000 of the compounds: halogenated fatty acids or their esters with alcohols, which acids or esters have at least 3 carbon atoms; narcotics, e.g. chloretone, chloral hydrate, simple or substituted carbamic and phenylcarbamic acid esters (urethanes), simple and substituted thiocarbamic and phenylthiocarbamic acid esters (thiourethanes); urea, thiourea and their derivatives; xanthogenates.  The compounds may be applied in the solid state, with or without a filler such as a dusting agent, in liquid form or in gaseous form. There are described tests illustrating retardation or prevention of sprouting in potatoes by volatilized bromine propionic acid ethyl ester (CH3.CHBr.COO.CH2 CH3) and phenylcarbamic acid ethyl ester, the prevention of growth of Phytophthora infestans on beerwort-agar medium by the vapours of bromine propionic acid propyl ester, potassium xanthogenate, phenyl carbamic acid ethyl ester, phenyl carbamic acid isopropyl ester, and chloral hydrate, and the prevention of growth of Aspergillus niger on beerwort-agar medium containing isopropyl phenylcarbamate and a -naphthylurethane.  The Specification as open to inspection under Sect. 91, comprises also control of vegetable and animal parasites on the foods or feeds by substances which act as inhibitors of the breathing ferments of these parasites.  This subject-matter does not appear in the Specification as accepted.
Patent GB-302647-A (GB)
Title: Airbag stem
IPC: B29C33/76
Filed: 1928-08-31
Abstract: 302,647. Goodyear Tire & Rubber Co., (Assignees of Rennes, C. van). Dec. 19, 1927, [Convention date]. Vulcanizing, cores for. -An inflating stem for use on air bags utilized as cores for pneumatic tyres during vulcanization has a rigid casing 11 and a flexible tube 16 extending substantially to the centre of the bag and secured to the end 12 of the rigid casing which seats within the bag. The flexible tube may be formed with a flange 17 adapted to be cemented to the wall of the bag. The tube 11 is exteriorly threaded in order that different types of extensions 15 may be fitted for the attachment to various forms of hose fittings.
Patent GB-910127-A (GB)
Title: Improvements in or relating to centrifugal non-clogging pumps
IPC: E03F5/22
Filed: 1961-07-11
Abstract: 910,127. Centrifugal pumps. VAUGHAN, J. E. July 11, 1961 [July 18, 1960], No. 25140/61. Class 110 (1). A submersible centrifugal pump comprises impeller blades 6 each having a horizontal flange 23 projecting from the leading free of the blade, the leading edge 22 of the flange being bent downward and ground so that its undersurface is parallel to the lower end plate 8 of the pump casing. Any stringy material, such as hay, straw, paper or rags, contained in the liquid entering the pump through inlet openings 9 is chopped up by the shearing action between the edges 22 and the openings 9. For this purpose, the edge of each opening 9 at the end towards which the blades 6 move is ground at an angle to the vertical.
Patent GB-615961-A (GB)
Title: Improvements in aircraft landing gears
IPC: B64C25/00
Filed: 1946-08-23
Abstract: 615,961. Aircraft undercarriages. OLAER PATENT CO., and COMPAGNIE GENERALE POUR L'EQUIPEMENT AERONAUTIQUE. Aug. 23, 1946, No. 25292. Convention date, June 6, 1945. [Class 4] An undercarriage leg fitted with the normal telescopic shock - absorber 1, 2, is provided with a plurality of pairs of torque links 3, 4, the pivot pins 8 of which are non-parallel so that the links may resist bending of the shockabsorber tube 2. Figs. 2 and 3 show two sets of torque links arranged at right-angles, but other arrangements are described in which four sets of links are disposed at right-angles to each other, and in which three sets are arranged at 120 degrees apart.
Patent GB-1333369-A (GB)
Title: Doppler radar system
IPC: G01S13/50
Filed: 1972-05-30
Abstract: 1333369 Radar BENDIX CORP 30 May 1972 [2 June 1971] 25298/72 Heading H4D In a Doppler radar system three signals of different frequency are transmitted sequentially, the difference in frequency between one pair of said signals giving a maximum unambiguous range greater than the maximum unambiguous range of a second pair, the first pair being used to give a signal indicating reflection from objects further than the maximum unambiguous range of the second pair and thus provide range cutoff. An oscillator 10, e.g. a varactor tuned diode is supplied with biasing voltage from circuit 11. A heater 12 is provided to stabilize the oscillator temperature and hence its characteristics. A modulator 19 causes oscillator 10 to emit three sequential frequencies which are fed to antenna 14. The reflected signals are mixed in mixer 17 with their corresponding transmitted frequencies and the resulting Doppler signals gated by voltages V 1 , V 2 , V 3  to their respective channels. The Doppler signals are preferably gated during only part of the transmission periods, e.g. during the final half of each period. It can be shown that the range beyond which phase measurement of Doppler signals gives ambiguous range values is inversely proportional to the difference in frequency of the transmitted signals. The two Doppler signals corresponding to the highest and lowest transmitted frequencies (f 3 -f 1 =820 KHz) are processed to give range and velocity information in the normal manner. The Doppler signals corresponding to frequency f 1  and mid frequency f 2  (f 2 -f 1 =410 KHz) are utilized to feed a circuit 34. Because f 2 -f 1 <f 3 -f 1  the maximum unambiguous range given by Doppler pair fd 1 , fd 2  is greater than that of fd 1 , fd 3  so that if the threshold of unit 34 is set at the maximum unambiguous range of the latter pair the output of unit 34 may be used to inhibit the system to objects beyond this latter range. Objects beyond the maximum unambiguous range of fd 1 , fd 2  do not usually create a problem as the reflections are of very low amplitude but if the system is sensitive to these the frequency difference f 2 -f 1  can be reduced. Mixer 17 and circulator 13 may be omitted if self mixing diodes are used.
Patent GB-272718-A (GB)
Title: Improvements in metal heating furnaces
IPC: C21D9/00
Filed: 1926-07-13
Abstract: 272,718. Jeffrey, G. July 13, 1926. Metal-heating furnaces; air and gas heating furnaces.-In a furnace for the treatment of iron articles to render them rustless, such as is described in Specification 15191/98, the air and steam heating tubes are walled within a structure to prevent the hot waste gases impinging upon them. Furnaces 2 are arranged along the outer wall of the treatment chamber 3 and the hot gases after passing over the upper edges 4<a> of partitions 4 pass downwards to a flue 6 and rise through a space 7 into the chamber 3. After acting upon the articles in the chamber the gases escape at 7<a>, pass through flues 8 and circulate in spaces 9, 9<a> around the structure 10 within which the air and steam tubes 12, 12<a> are situated, escaping at 11 to the chimney. The walls w of the structure 10 entirely enclose the tubes 12, which are supported by inner walls a. Air is admitted to the tubes 12<a> through a door d' until the fire has burnt up, the door is then closed and steam is admitted to the space d, through a pipe 14, the heated steam passing from the tubes into a space 6 from which it is led to a space 15 beneath the chamber 3, whence it passes through openings 16 to mix with the smoke gases from the furnaces 2. Openings 17 are provided for cleaning the flues 8.
Patent GB-158038-A (GB)
Title: Improvements in space-casting mechanism of typographic machines
IPC: B41B11/52
Filed: 1919-10-17
Abstract: 158,038. Druitt, P. W., and Gilpin, W. R. Oct. 17, 1919. Moulds and matrices for single type composing and casting machines. Machines in which matrices are set up in line and then presented separately to the casting-mechanism are provided with means for casting low spaces by means of a divided mould-blade The set-notch of the space matrix d, Fig. 1, is stepped, the shallower part d<1> determining the set-width of the mould, and the . deeper part d<2> permitting the cut-off section of the blade to close the mould. The two blades have lugs a', b', Fig. 3, arranged side by side to engage the two parts of the set-notch. For casting characters or type-high spaces, the two parts of the notch are in one plane so that the casting ends a‹, b‹ of the blades are in alignment. Specification 1903/00 is referred to
Patent GB-737969-A (GB)
Title: Improvements relating to two-stroke internal combustion engines
Inventor: KREMSER JOHANN
IPC: F02B75/22
Filed: 1953-09-15
Abstract: 737,969. Two-stroke engines, valve gear, fuel-injection pumps. HANNOVERSCHE MASCHINENBAU-AKT.-GES. VORM. G. EGESTORFF, HANOMAG. Sept. 15, 1953 No. 25530/53. Classes 7(2), 7(3) and 7(6). In an engine comprising rows 1, 2 of cylinders disposed in V-formation, the cylinders are individually mounted on the crankcase 3, and each row of cylinders is enclosed by a scavenging-air receiver 9, e.g. comprising a C or U-shaped sheet metal or cast metal housing, connected to a scavenging-air receiver 10, mounted on the crankcase and between the rows of cylinders. The receiver 10 may carry a scavenging-air blower 14 and injection pumps 15 and be provided with a tunnel enclosing a camshaft 12 mounted in bearings 13 seating on a facing 11 of the crankcase, the axis of the camshaft lying in the plane of the facing. The receivers 9, 10 may be connected by a sealing plate forming the top cover of the receivers and held between the cylinders and cylinder heads 17.
Patent GB-766481-A (GB)
Title: Improvements in valves having deformable sleeve elements
IPC: F16K7/06
Filed: 1954-09-02
Abstract: 766,481. Pinch cocks. TZIRIPOULOFF, A. Sept. 2, 1954 [March 9, 1954], No. 25555/54. Class 135. In a valve having a flexible sleeve 1 of resilient material which is pinched to cut off the fluid flow, the sleeve is formed with integral end flanges 2, 3 to ensure fluid-tightness of the valve with respect to the adjoining pipe sections, and the centre part of the sleeve is curved to form a hump 4, the inner or concave wall 5 of which is provided with a thickened portion 6 which extends rather more than half-way round the sleeve and has along its median line a centring fin or tongue 7 held between two casing sections 9, 10. The ends 8 of the thickened portion 6 taper and merge into the top of the sleeve adjacent the hump 4. The sleeve has the same cross-sectional area at the hump as at the ends. The tongue 7 is bonded or welded to the thickened portion 6 and is received in grooves or recesses in the sections 9, 10. The sleeve is compressed by a plunger 13 connected to a threaded rod 16 engaging a nut 15 operated by a handwheel 14.
Patent GB-257334-A (GB)
IPC: H01F21/00
Abstract: 257,334. Townsend, J. S. E. May 27, 1925. Wireless tuning-apparatus, adjustment devices for; inductances. -Adjustable inductances comprise a variometer with means to connect its coils in series or parallel and one or more additional coils closely coupled to the variometer, the additional coils being successively included m series with the variometer to obtain various wavelength ranges and the series connections of these coils, when they are not so included, being broken without completely severing the coils from the circuit. The disturbing effects of the coils not in use on the variometer circuit is thus diminished. Additional coils 2, 3, Fig. 3, may be wound with interposed spacers E directly over the stator coil 4 on a frame F, the rotor being arranged within the frame F. Four overlapping wavelength ranges may be obtained; in the first three, the coil 4 is in parallel with the rotor coil and one, or both of the coils 2, 3 are in series with the variometer whilst, in the final range, the coils 2 - - 4 and the rotor coil are all in series. A switch to effect these changes of connections comprises springs S<1> - - S<8>, Fig. 6, co-operating with contact plates m<1>- - m<5> and studs t<1> - - t<8> cn a rotatable cylinder 7. The springs S<1> - - S<4> are connected to the ends of the stator coil 4 and rotor coil, the springs S<4> and S<5> are connected together, and the ends of the coils 2, 3 arc connected respectively to the springs S<6> - - S<8> and to the metal rod 8 connected to one terminal of the instrument. The plates m<1> - - m5 interconnect adjacent springs, the studs t<3>, t<5>, t<6> connect the corresponding springs to the rod 8 and the remaining studs are insulated. The four ranges are indicated by marks on a disc 11 co-operating with a pointer 12, the switch being mounted in one unit with the variometer and the rotatable dial of the variometer having four scales cooperating with a fixed metal strip. The switch may be operated by the variometer handle, an arm v<5>, Fig. 8, on the latter engaging arms v<1> - v<4> on the disc 11. Each wavelength range corresponds to rotation of the arm v<5> through 180‹ beneath the line x<1>, continuous rotation of the arm v<5> brringing the ranges successively into use and stops y<1>, y<2> limiting the motion of the disc 11. In modified connections giving four wavelength ranges, the coil 4 and the rotor coil are in parallel in the first range and in series in the other ranges, both coils 2, 3 being excluded in the first two ranges and included in the last range whilst, in the third range, the coil 2 is included and the coil 3 is excluded. The Provisional Specification describes arrangements in which the additional coils out of use are in parallel to the stator coil and in which movement of the switch moves a pointer co-operating with the variometer scales.